Business Heating, Cooling Installation & Repairs in St. Catharines & the Niagara Region

J&S Heating & Air Conditioning proudly supports local business through installation and maintenance of heating and cooling systems and refrigeration appliances. If your small business needs immediate repairs on a boiler or wants to purchase a new air conditioning system, contact J&S Heating & Air Conditioning in St. Catharines.


Our licensed technicians service and install various commercial equipment including:

  • Furnaces
  • Boilers
  • Heat pumps
  • Air conditioners
  • Ductless split systems
  • Conventional water heaters
  • Thermostats & controls
  • Rooftop units/make-up air units
  • Radiant tubes
  • Infrared heating
  • Unit heaters
  • Chillers
  • Reach-in coolers/freezers
  • Walk-in coolers/freezers
  • Dry-O-Trons
  • Water/cooling towers
  • Farm cold storage equipment

Commercial Contract Maintenance

All heating, air conditioning, refrigeration and farm cold storage systems need to be maintained to ensure proper functioning. J&S Heating & Air Conditioning wants your equipment to run efficiently at all times, and we’ve established a preventative maintenance program to help you reach this goal. We can prevent most breakdowns which occur due to neglect. Our program will save you money in the long run by avoiding major repairs.


Our preventive maintenance program provides the following:

  • Energy savings
  • Increased comfort
  • Reduced equipment failures
  • Extended equipment life
  • Priority emergency service
  • Peace of mind

Please note that our commercial preventive maintenance plans automatically renew each year unless a written notice is received prior to the renewal date of your contract.

Commercial Client List

J&S Heating & Air Conditioning proudly serves the following list of commercial clients:

  • Niagara Fallsview Casino Resort
  • Waste Management Inc.
  • Grantham Mennonite Brethren Church
  • Stokes Seeds Ltd.
  • Verge Insurance Agencies
  • Grantham Shopping Plaza
  • Birds Moving & Storage
  • Newman Bros. Limited
  • Shabri Properties Ltd. 
  • Warner’s Farm 
  • Tim Horton

J&S Heating & Air Conditioning’s preventive maintenance program can be tailored to your specific needs. Let our licensed team look after your system and prevent costly breakdowns. Call us for a free, no-obligation quote.

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Emergency Repairs

Call J&S Heating & Air Conditioning 24/7 for service

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